Library/Openings/King's Indian Defense/Averbakh Variation/Flexible Defense ECO E73
Opening· 12 plies

King's Indian Defense: Averbakh Variation, Flexible Defense

An entry in the Encyclopedia of Chess Openings (ECO E73), reached after 12 half-moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h6.

King's Indian Defense: Averbakh Variation, Flexible Defense ECO E73
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Black rook
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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

King's Indian Defense: Averbakh Variation, Flexible Defense is an opening in the Encyclopedia of Chess Openings, classified under code E73. ECO group E (E00–E99) covers Indian defences against 1.d4, covering the Nimzo-Indian, Queen's Indian, King's Indian and Catalan systems. This particular variation is reached after 12 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h6.

It belongs to the King's Indian Defense family. Within that family this is a level-2 branch (the Averbakh Variation → Flexible Defense line). The immediate parent line is King's Indian Defense: Averbakh Variation, transitioned via 6…h6.

The opening sequence in prose form: 1.d4 Nf6, 2.c4 g6, 3.Nc3 Bg7, 4.e4 d6, 5.Be2 O-O, 6.Bg5 h6. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.